ira-color.c (put_allocno_into_bucket): Remove set but not used local variable hard_regs_num.

2009-11-28  David Binderman  <dcb314@hotmail.com>

	* ira-color.c (put_allocno_into_bucket): Remove set but not used
	local variable hard_regs_num.
	* ira-lives.c (process_single_reg_class_operands): Remove cover_class.
	* loop-unswitch.c (unswitch_loop): Remove zero_bitmap.
	* lower-subreg.c (decompose_multiword_subregs): Remove next.

From-SVN: r154720

gcc/ChangeLog

+2009-11-28  David Binderman  <dcb314@hotmail.com>
+
+	* ira-color.c (put_allocno_into_bucket): Remove set but not used
+	local variable hard_regs_num.
+	* ira-lives.c (process_single_reg_class_operands): Remove cover_class.
+	* loop-unswitch.c (unswitch_loop): Remove zero_bitmap.
+	* lower-subreg.c (decompose_multiword_subregs): Remove next.
+
 2009-11-27  Martin Jambor  <mjambor@suse.cz>
 
 	PR middle-end/42006

gcc/ira-color.c

@@ -1476,11 +1476,9 @@ setup_allocno_left_conflicts_size (ira_allocno_t allocno)
 static void
 put_allocno_into_bucket (ira_allocno_t allocno)
 {
-  int hard_regs_num;
   enum reg_class cover_class;
 
   cover_class = ALLOCNO_COVER_CLASS (allocno);
-  hard_regs_num = ira_class_hard_regs_num[cover_class];
   if (ALLOCNO_FIRST_COALESCED_ALLOCNO (allocno) != allocno)
     return;
   ALLOCNO_IN_GRAPH_P (allocno) = true;

gcc/ira-lives.c

@@ -804,7 +804,7 @@ process_single_reg_class_operands (bool in_p, int freq)
 {
   int i, regno, cost;
   unsigned int px;
-  enum reg_class cl, cover_class;
+  enum reg_class cl;
   rtx operand;
   ira_allocno_t operand_a, a;
 
@@ -861,7 +861,6 @@ process_single_reg_class_operands (bool in_p, int freq)
       EXECUTE_IF_SET_IN_SPARSESET (allocnos_live, px)
         {
 	  a = ira_allocnos[px];
-	  cover_class = ALLOCNO_COVER_CLASS (a);
 	  if (a != operand_a)
 	    {
 	      /* We could increase costs of A instead of making it

gcc/loop-unswitch.c

@@ -392,7 +392,6 @@ unswitch_loop (struct loop *loop, basic_block unswitch_on, rtx cond, rtx cinsn)
   edge entry, latch_edge, true_edge, false_edge, e;
   basic_block switch_bb, unswitch_on_alt;
   struct loop *nloop;
-  sbitmap zero_bitmap;
   int irred_flag, prob;
   rtx seq;
 
@@ -409,7 +408,6 @@ unswitch_loop (struct loop *loop, basic_block unswitch_on, rtx cond, rtx cinsn)
   /* Make a copy.  */
   irred_flag = entry->flags & EDGE_IRREDUCIBLE_LOOP;
   entry->flags &= ~EDGE_IRREDUCIBLE_LOOP;
-  zero_bitmap = sbitmap_alloc (2);
   if (!duplicate_loop_to_header_edge (loop, entry, 1,
 			      	      NULL, NULL, NULL, 0))
     return NULL;

gcc/lower-subreg.c

@@ -1174,13 +1174,11 @@ decompose_multiword_subregs (void)
 
 	  FOR_BB_INSNS (bb, insn)
 	    {
-	      rtx next, pat;
+	      rtx pat;
 
 	      if (!INSN_P (insn))
 		continue;
 
-	      next = NEXT_INSN (insn);
-
 	      pat = PATTERN (insn);
 	      if (GET_CODE (pat) == CLOBBER)
 		resolve_clobber (pat, insn);